Compression faucet of cock.



F. SCHULDER. COMPRESSION FAUOET 0R COCK.

APPLICATION FILED 1'33. 5, 1913 Patented Aug. 11, 1914.

Fig. 2

THE AORRIS PETERS CO. PHOro-LITHO.. WASHINGTON. D L.

ivrrnn s'ra rns PA OFFICE- FREID SCHULDER, OF CLEVELAND, OHIO, ASSIGNOR TO JOSEPH H. GLAUBER, OF CLEVELAND, OHIO.

Specification of Letters Patent.

Patented Aug. 11, 1914.

Application filed February 5, 1913. SerialNo. 746,298.

To all whom it may concern Be it known that I, FRED SCI-IULDER, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Compression Faucets or Cocks, of which the following is a specification.

The invention comprises an improved compression faucet or cock of the quickopening and closing kind having a Valve adapted to be operated by a screw-member, all substantially as herein shown and described and more particularly pointed out in the claims.

The prevailing practice is to provide the valve-stem of a quick-opening and closing faucet or cook with plural screw-threads of such steep lead that only a partial turn of the valve-stem is required to fully open or close the valve within certain limits. The advantages of this arrangement are well understood but the ordinary construction of valve-stem as used for this purpose is open to grave objection in that the valve cannot be absolutely relied upon to remain in a permanently closed or partly closed position, particularly in those places and districts having water-distributing systems subject to high or changeable pressures. In fact valves of this kind have been the cause of much damage and loss by suddenly and unexpectedly releasing the water, and to make the situation all the more serious the valve may not manifest this trouble when new but only after the valve has been in use for some time and the screw-threads and packing have become worn. In addition to this defect, the screw-threads of such quick-opening and closing faucets or cocks do not provide as large an opening at a given partial turn of the handle, say one-quarter turn, as is desired.

The general object of the present invention is to provide a simple and effective looking screw-stem to overcome the faults and objections above enumerated; and a further object is to provide an increased lead of the screw-thread when it is of advantage to give a greater flow of water for a given amount of rotation of the stem, or the same flow at a lesser rotation than heretofore, while providing at the same time a safe and reliable quick-opening and closing faucet.

In the accompanying drawing, Figure 1 is a sectional view and side elevation of a basin cook or faucet. embodying my improvement, and Fig. 2 is a sectional view, considerably enlarged, of the same invention showing the locking effect of the screw-threads when the valve is seated. 3

The form or style of the faucet or cock is immaterial, but as shown, comprises a main body 2 having a screw-threaded bottom extension 3 adapted to be connected with the water supply, the discharge from the body being through valve-seat 1 and spout 5. The valve 6 has a stem 7 extending through neck 8 of the, body 2 and a screw-cap 9 with a gland or packing 10 supports said stem for rotatable vertical movement at the top of said neck. Rotation is imparted by handle 11, and an axial opening and closing movement of the valve 6 is obtained by a single screw-thread of quick-lead, the male portion 19 being on the stem 7 and the female portion 13 being made either in a removable sleeve 14; as in Fig. 1, or in the neck 6 as in Fig. 2. t c The screw-threads 12 and 13 are particularly distinguished in that they have a steep pitch approximately equal to the diameter of the stem and in that they are partly square and partly of V formation with the inclined face 15 of the thread relatively long and at an angle of approximately twenty degrees, more or less, to the axis of the stem. This angle may be anywhere between fifteen and thirty degrees, dependent on the pitch of the thread. The Width of the square portion 16 of the thread is approximately the same as the width of the groove 17 at its greatest depth, but a slight diiference in the diameters of the male and female threads allows and provides for a slight independent axial movement of the stem and its male thread relatively to the female thread and a corresponding move ment of valve 6 to the seat 1 especially during final closing movements of said valve. Thus it occurs that when the valve-stem is rotated and on its downward course to close the valve the weight of the valve stem and its parts and any down pressure on the handle comes upon the square portions of the screw-threads and the inclined portions 15 of the respective screw-threads are separated thereby making the valve easy to close with a minimum of friction and wear. However, the valve will operate equally well in a horizontal or any other position.

The rotative movement of Valve 6 when engaging seat 4t causes a change in the working relationship of the screw-threads whereby the points of bearing are shifted from the relatively small square parts of the screwthreads to the longer or inclined faces 15 thereof, see Fig. 2. The degree of angleof these faces is such that a greater or less turning force upon the valve handle at the :close produces awedging effectbetween the taper- .ing portions of the screw-threads, thereby .width of the groove provides opportunityrfor making the angle of the face 15 to the axis of the stem even more acute than as shown to enhance the locking effect in proportion to the increased steepness of the .lead. The

threaded. stems now in use in quick-opening and closing faucets or cocks become more unsafe when the pitch is increased. i

The square portion ofthe screw-thread need not necessarily be square but may be of any angle or shape. For example, this .por-

t-ion of the thread may be made as in the various forms of the standard V-thread, but the tapering portion 15 should be of an extended length to provide a large frictional surface at an acute angle to the axis to produce the desired wedging and locking effect when pressure is exerted against the valve end of the stem.

In the known quick-opening faucets, difficulty is often experienced in permanently setting the valve in a partially open position for a moderate or slight flow of water as the end thrust and outflow of water tends to rotate and raise the mlve on its quickthread, but in the present invention the upward end pressure on the valve must firstraise the valve-stem and bring the tapering surfaces 15 into contact relations, and no rotation will. occur as the extended tapering surfaces offer too much frictional resistance; and the greater the upward end pressure the more effective becomes the wed ging and looking relations.

\Vhat 1 claim is:

1; In a quick opening and closing faucet, a body and a valve controlling stem for said body having screw-threads of different diameters formed with wedging surfaces of acute taper.longitudinally. thereof to lock the valve down in a set position, the said threads being of the quick type and adapted to open-and close .the valve on a short turn.

2. A faucet or cock having a valve to control the passage of water therethrough, a valve stem having quick-acting threads provided with longitudinallyextended wedge shape outer portions to lock the valve when seated and a yielding seatfor said valve adapted to co-act with said wedge-portions to produce different wedging eliccts.

3. A faucet body having a valve seat, a valve having a stem and a handle, and said body and stem having co-related screw threads formed with wedging surfaces at an .aeutc angle relatively to the axis of the stem and sloping inwardly toward the handle end of said stein, whereby an enhanced locking effect may be obtained between the sloping wedging surfaceswhen the valve is seated.

In testimony. whereof I afiix my signature in presence of two witnesses. V

. FRED SGHULDER. Witnesses.

R. B. Mosnn,

E. M. FISHER.

Copies of this patent may be obtained for five cents eaeh,.'by addressing the Commissioner of Patents,

Washington, D. C. 

